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Valorization of Treated River Sediments in Self Compacting Materials.

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2012
auteur(s) Lafhaj Zoubeir; Duan Zhibo; Belhadj Ali Imen; Depelsenaire Guy
journal (abréviation) Waste and Biomass Valorization (Waste and Biomass Valorization)
volume (numéro) 3 (2)
  
pages 239 – 247
résumé The objective of this study is the valorization of polluted river sediments, after treatment by stabilization, into self-compacting materials. The article is divided into three parts. The first part presents the process of treatment, which was selected to stabilize the organic and inorganic pollutants present in sediments. The second part deals with the experimental testing and methodology followed in this study. The last part is devoted to the study and analysis of the main results of valorization of the treated sediments included in the composition of a self-compacting material intended for backfill trenches. Several formulations with different ratio of sediments, sand, cement and lime were investigated. The main properties determined were the immediate bearing capacity ratio and the compressive strength at 28 days. The selected formulation is composed of 75% of treated sediments, 25% of sand, 2% of cement and 4% of lime.
mots clés River sediments Heavy metals Phosphatation Calcination Valorization Self compacting material
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